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Element

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Element  (ELEMENT)


Sampling procedures1 are used to obtain information about a population from part of the population only instead of having to study every person (110-2). The part of the population studied is called a sample2. A population is a collection of elements3 which are the object of the investigation. A sampling unit4may be an element or a group of elements of the population and is used for selecting samples. In demographic samples the elements are generally individuals (110-2), families (112-1) or households (110-3), and sampling units may be individuals, households, blocks of houses, municipalities or areas. The sample will consist a number of sampling units selected in accordance with a sampling scheme5 or sampling plan5.
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